15、Illustrations should be used whenever they will simplify, shorten, or make the text easier to understand.

1223、STE is a living 1anguage and needs feedback from the users to improve it on a continuous basis.

1222、请注意,飞机的改装或修理工作必须由持照人员完成。

1221 、 Aircraft maintenance manual or section , which includes at 1east thefo11owing D information
introduction information that includes an explanation of the airplane's features and data to the extent
necessary for maintenance or preventive maintenance.

43 to perform limited preventive maintenance on his airplane.

1220、对于拥有或操作非运营飞机的持照飞行员,可以在联邦航空法规 43 部的授权下对其飞机实施受限制
的预防性维修。

1219、It has a single shaft and operates at a constant speed.

1218、This enables better thrust management and decreases

1217、用大量肥皂水清洗窗户。

1216、This document shall specify,for a crack inspection, the minimum size crack expected to be discovered
or, if no minimum is defined, a statement to this effect.

1215、Controls in the flight compartment permit selection of temperature and flow rates.